2 March 2006 Flat panel detector-based cone beam CT for dynamic imaging: system evaluation
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Proceedings Volume 6142, Medical Imaging 2006: Physics of Medical Imaging; 61422C (2006); doi: 10.1117/12.655717
Event: Medical Imaging, 2006, San Diego, California, United States
The purpose of this study is to characterize a newly built flat panel detector (FPD)-based cone beam CT (CBCT) prototype for dynamic imaging. A CBCT prototype has been designed and constructed by completely modifying a GE HiSpeed Advantage (HSA) CT gantry, incorporating a newly acquired large size real-time FPD (Varian PaxScan 4030CB), a new x-ray generator and a dual focal spot angiography x-ray tube that allows the full coverage of the detector. During data acquisition, the x-ray tube and the FPD can be rotated on the gantry over Nx360 degrees due to integrated slip ring technology with the rotation speed of one second/revolution. With a single scan time of up to 40 seconds , multiple sets of reconstructions can be performed for dynamic studies. The upgrade of this system has been completed. The prototype was used for a series of preliminary phantom studies: different sizes of breast phantoms, a Humanoid chest phantom and scatter correction studies. The results of the phantom studies demonstrate that good image quality can be achieved with this newly built prototype.
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Ruola Ning, David Conover, Yong Yu, Yan Zhang, Weixing Cai, Dong Yang, Xianghua Lu, "Flat panel detector-based cone beam CT for dynamic imaging: system evaluation", Proc. SPIE 6142, Medical Imaging 2006: Physics of Medical Imaging, 61422C (2 March 2006); doi: 10.1117/12.655717; https://doi.org/10.1117/12.655717

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